BEGIN:VCALENDAR VERSION:2.0 PRODID:-//chikkutakku.com//RDFCal 1.0//EN X-WR-CALDESC:GoogleカレンダーやiCalendar形式情報を共有シェ アしましょう。近所のイベントから全国のイベントま で今日のイベント検索やスケジュールを決めるならち っくたっく X-WR-CALNAME:ちっくたっく X-WR-TIMEZONE:UTC BEGIN:VEVENT SUMMARY:Semilar\, Shota Nakagawa (TDLI) DTSTART;VALUE=DATE-TIME:20260924T043000Z DTEND;VALUE=DATE-TIME:20260924T053000Z UID:586608351585 DESCRIPTION:Title: Bogoliubov analysis of particles produced by bubble col lisions\n\nAbstract:\nFirst-order phase transitions in the early Universe are ubiquitous from the viewpoint of particle physics. Particle production during the nucleation and collision of bubbles has been widely discussed. In this talk\, we focus on fermion production induced by relativistic bub ble collisions. The post-collision scalar-field dynamics in the planar app roximation are described well in terms of Milne coordinates\, rather than Minkowski\, due to the SO(1\,1) symmetry. We exploit this feature to devel op a Bogoliubov formalism for fermions in Milne spacetime and study the sp ectrum and abundance of the produced fermion particles. LOCATION: END:VEVENT END:VCALENDAR